The growth rate of solid lung nodules is mainly determined by the nature of the nodule, if the nodule is benign, it usually grows slowly, and if it is malignant, it usually survives faster. It is recommended that the patient undergoes a complete examination to determine the nature of the nodule. Solid nodules are soft tissue nodules that are uniform in density and the images of blood vessels and bronchial tubes in the lungs are obscured. Solid pulmonary nodules can be categorized into benign and malignant pulmonary nodules. Malignant pulmonary nodules usually have a rapid course, are highly malignant, and grow rapidly. Benign nodules usually have a slower survival rate. It is recommended that the patient undergoes tumor marker tests, chest X-ray, chest CT scan, and positron emission tomography (PET) to determine the nature of the nodule and to develop a treatment plan.